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Paper Abstract and Keywords
Presentation 2019-12-13 16:30
Arc energy calculation in re-striking phenomena in break operations of AgSnO2 contacts in inductive DC load conditions up to 20V-17A
Makoto Hasegawa, Seika Tokumitsu (Chitose Inst. of Sci.&Tech.) EMD2019-47 Link to ES Tech. Rep. Archives: EMD2019-47
Abstract (in Japanese) (See Japanese page) 
(in English) AgSnO2 contacts were operated to break an inductive DC load circuit of 14V-7A, 14V-12A, 20V-7A, or 20V-17A with an applied external magnetic field of about B=120mT at contact opening speeds in the range of 1mm/s to 200mm/s. During the break operations, re-striking phenomena were likely to be observed with larger load current levels and/or faster contact opening speed levels. The number of observed re-strike incidents was sometimes two or more. The calculation results of arc energy revealed that the total arc energy from the initial arc ignition to the final arc extinction reached almost the same level under the same operating condition, irrespective of re-striking incidents. Thus, occurrences of re-striking phenomena in break operations of inductive DC loads up to 20V-17A are influenced by the amount of energy that is supplied into and to be consumed at a contact gap. Even when arc is blown out of a contact gap due to an external magnetic field, re-striking may occur and repeat until the supplied energy is consumed.
Keyword (in Japanese) (See Japanese page) 
(in English) electrical contacts / AgSnO2 contacts / break arc / re-striking / arc energy / magnetic blowing / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 339, EMD2019-47, pp. 25-30, Dec. 2019.
Paper # EMD2019-47 
Date of Issue 2019-12-06 (EMD) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EMD2019-47 Link to ES Tech. Rep. Archives: EMD2019-47

Conference Information
Committee EMD  
Conference Date 2019-12-13 - 2019-12-13 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To EMD 
Conference Code 2019-12-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Arc energy calculation in re-striking phenomena in break operations of AgSnO2 contacts in inductive DC load conditions up to 20V-17A 
Sub Title (in English)  
Keyword(1) electrical contacts  
Keyword(2) AgSnO2 contacts  
Keyword(3) break arc  
Keyword(4) re-striking  
Keyword(5) arc energy  
Keyword(6) magnetic blowing  
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Keyword(8)  
1st Author's Name Makoto Hasegawa  
1st Author's Affiliation Chitose Institute of Science and Technology (Chitose Inst. of Sci.&Tech.)
2nd Author's Name Seika Tokumitsu  
2nd Author's Affiliation Chitose Institute of Science and Technology (Chitose Inst. of Sci.&Tech.)
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Speaker Author-1 
Date Time 2019-12-13 16:30:00 
Presentation Time 25 minutes 
Registration for EMD 
Paper # EMD2019-47 
Volume (vol) vol.119 
Number (no) no.339 
Page pp.25-30 
#Pages
Date of Issue 2019-12-06 (EMD) 


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